/Engine/Source/Runtime/Interchange/Core/Public/Types/AttributeStorage.h
Return aFGuidbuild from theFSHA1of the specified attribute data. If the Attribute do not exist it return an empty FGUID
[FGuid](API\Runtime\Core\Misc\FGuid) GetAttributeHash ( const [FAttributeKey](API\Runtime\InterchangeCore\Types\FAttributeKey) & ElementAttributeKey ) const